Stockholders' Equity (Detail) - USD ($)	2 Months Ended	5 Months Ended	12 Months Ended
	Feb. 28, 2022	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Mar. 01, 2022	Jan. 25, 2022	Jul. 27, 2021
Class of Stock [Line Items]
Repurchase of common stock			$ 1,355,722,000	$ 849,909,000	$ 694,909,000
Shares acquired		$ 4,804,124,000	$ 4,804,124,000	$ 3,448,402,000
Repurchase agreements
Class of Stock [Line Items]
Shares acquired (in shares)		20,068,498
Repurchase of common stock		$ 4,400,000,000
Repurchase agreements | Subsequent Event
Class of Stock [Line Items]
Shares acquired (in shares)	1,510,027
Repurchase of common stock	$ 360,800,000
Repurchase agreements | Subsequent Event | 10b5-1
Class of Stock [Line Items]
Shares acquired (in shares)	1,066,015
Repurchase of common stock	$ 256,500,000
Common Stock
Class of Stock [Line Items]
Increase in authorized amount of repurchases								$ 1,000,000,000
Aggregate authorized repurchase amount								$ 5,100,000,000
Shares acquired (in shares)			5,451,556	3,497,285	2,211,866
Remaining authorized repurchase amount		700,000,000	$ 700,000,000
Shares acquired		$ 1,400,000,000	$ 1,400,000,000	$ 940,800,000	$ 636,800,000
Common Stock | Subsequent Event
Class of Stock [Line Items]
Increase in authorized amount of repurchases							$ 1,000,000,000
Aggregate authorized repurchase amount							$ 6,100,000,000
Remaining authorized repurchase amount						$ 1,300,000,000